不同施氮量对饲用燕麦光合特性及氮素光合利用效率的影响

郑敏娜, 梁秀芝, 康佳惠, 李荫藩, 王慧, 韩志顺, 陈燕妮

Effects of Different Nitrogen Application Rates on Photosynthetic Characteristics and Nitrogen Photosynthetic Utilization Efficiency of Fed Oats

Zheng Minna, Liang Xiuzhi, Kang Jiahui, Li Yinfan, Wang Hui, Han Zhishun, Chen Yanni

表3 施氮量对饲用燕麦光合特性相关指标的影响

Table 3 Effects of nitrogen application rate on the photosynthetic properties of fed oats

品种 Variety 处理 Treatment Pn [μmol/(m2·s)] Ci (μmol/mol) Gs [mmol/(m2·s)] Tr [mmol/(m2·s)] RCC LAI 蒙燕1号Mengyan No.1 N0 12.15±0.45b 3.10±0.05b 174.32±12.31b 255.40±25.30a 40.31±1.26b 3.03±0.36c N1 12.72±0.51b 3.86±0.02a 188.41±13.20b 299.14±29.31a 44.67±3.12b 3.64±0.52b N2 14.24±0.62a 3.80±0.10a 224.51±14.60a 321.12±33.63a 52.36±4.79a 4.16±0.55a 平均值 13.04 3.59 195.73 291.87 45.78 3.61 KONA N0 11.53±0.32b 3.25±0.05b 196.21±14.01b 169.32±20.12b 41.96±5.36b 4.51±0.75b N1 12.19±0.48ab 4.16±0.15a 181.41±12.90b 314.73±32.62a 42.39±4.92b 4.91±0.86ab N2 14.90±0.66a 3.92±0.12a 225.61±14.91a 234.34±24.13a 53.16±5.97a 5.21±0.94a 平均值 12.87 3.78 201.07 239.43 45.84 4.87 甜燕麦Sweet oat N0 11.25±0.29b 3.52±0.14b 180.22±13.41b 263.54±27.60a 41.35±5.14b 4.26±0.78c N1 14.23±0.60a 3.99±0.16ab 236.11±15.13a 276.40±28.11a 46.23±5.88b 4.78±0.79b N2 13.96±0.62ab 4.29±0.18a 226.40±14.71a 239.13±23.44a 53.32±6.02a 5.26±0.85a 平均值 13.15 3.93 214.23 259.67 46.97 4.77 坝燕7号Bayan No.7 N0 10.50±0.21c 3.45±0.13b 185.61±13.40b 316.24±32.10a 39.66±4.56b 3.02±0.23c N1 12.70±0.49b 4.21±0.14a 243.90±15.64a 295.31±29.44a 41.78±5.12b 3.59±0.38b N2 13.51±0.58a 4.19±0.17a 224.31±14.32a 216.44±22.60b 46.59±5.69a 4.02±0.61a 平均值 12.24 3.95 217.93 275.97 42.68 3.54 F ** ** ** ** * ** V ** ** ** * * * F×V ** ** ** * ns *